...: Ferro-pedrizite, a new amphibole-supergroup mineral was discovered in the Sutlug pegmatite occurrence situated in the Targi River Basin, Tyva Republic, Eastern Sibera, Russia. The associated minerals are quartz, albite, microcline, spodumene, cassiterite, beryl, columbite-(Mn), fergusonite-β-(Y...

... that the sample consists of a mixture of two distinct amphibole compositions, tremolite and a new amphibole end-member, fluoro-sodic-pedrizite, ideally A Na B Li 2 C (Mg 2 Al 2 Li) T Si 8 O 22 X F 2 (IMA-CNMMN 2004-002). Fluoro-sodic-pedrizite from Tastyg has the following crystal-chemical formula and unit-cell...

...{document} Al 2 Li) T Si 8 O 22 W F 2 , is related to the theoretical end-member `sodic-pedrizite', A Na B Li 2 C (Mg 2 Al 2 Li) T Si 8 O 22 W (OH) 2 , by the substitutions C Fe 2+ → C Mg and W F → W (OH). * E-mail: [email protected] 7 7 2009 14 5 2009 © The Mineralogical...

..., which cannot be fitted into the four major amphibole groups. New root-names such as sodic-pedrizite in the Mg-Fe-Mn-Li group and obertiite and dellaventuraite in the sodic group along with two new prefixes, parvo and magno have also been added. As result it has become necessary to modify the AMPH-IMA97...

...: leakeite, kornite, whittakerite and pedrizite) have more than half-occupied A-group sites. Seven new amphibole end-members containing lithium have been discovered in epysienites (dequartzified and albitised granites) from the Pedriza Massif (Central Spain), where lithium incorporation and partitioning...

...). It contains the maximum amount of Li that can be incorporated in the amphibole structure. The name was approved by the IMA-CNMMN together with restriction of the use of the prefix sodic in the pedrizite series to compositions with B Na > 0.5 apfu; its use for compositions with Na tot > 0.5 apfu has been...

...} \usepackage{amsmath} \pagestyle{empty} \begin{document} \(^{A}(Na_{0.70}K_{0.03})^{B}(Li_{1.34}Na_{0.58}Ca_{0.08})\ (Mg_{1.75}Fe_{1.65}^{3+}Li_{0.88}Fe_{0.32}^{2+}A1_{0.21}Ti_{0.11}Mn_{0.07}^{2+}Zn_{0.01})Si_{8.00}O_{22}(OH_{1.35}F_{0.65})\) \end{document} . Structure refinement of one crystal of pedrizite...

... Li in the magnesium-iron-manganese-lithium group. Lithium is an alkali metal, is formally monovalent, and shows complete solid-solution with Na at the M (4) site in monoclinic amphiboles, e.g., leakeite–pedrizite: Na Na 2 (Fe 3+ 2 Mg 2 Li) Si 8 O 22 (OH) 2 – Na Li 2 (Fe 3+ 2 Mg 2 Li) Si 8...

..., namely ferri-clinoferroholmquistite (IMA–CNMMN 2001–066) and sodic-ferri-ferro-pedrizite (IMA–CNMMN 2001–068). Many changes were done in the nomenclature of the Li-rich amphiboles in an attempt to rationalize the various problems that arose as a result of the latest findings. Therefore, we provide...

...-chemical or chemical reason for including Li in the magnesium–iron–manganese – lithium group. Lithium is an alkali metal, is formally monovalent, and shows complete solid-solution with Na at the M (4) site in monoclinic amphiboles ( e.g. , leakeite–pedrizite: Na Na 2 [Fe 3+ 2 Mg 2 Li] Si 8 O 22...

..., 79, 1073–1087. This New Mineral Names has entries for 18 new minerals, including aradite, chlorkyuygenite, chubarovite, cryobostryxite, ferriakasakaite-(La), ferriandrosite-(La), ferro-pedrizite, flamite, flinteite, fluorchegemite, fluorkyuygenite, fluormayenite, fluor-tsilaisite, gatedalite...

...}\ (LiFe^{2+}_{2}Fe^{3+}Al)\ Si_{8}\ O_{22}\ (OH)_{2}.\] \end{document} The prefix sodic is derived from the IMA97 rules for the use of prefixes in which sodic applies in Group 1 only, and then only to samples with total Na > 0.50 apfu. Those with total Na ≤ 0.50 apfu are pedrizite unless K...